FREE EKG Certification MCQ Question and Answers Flashcards
6 cards from real EKG certification Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 FREE EKG Certification MCQ Question and Answers flashcards as text
A patient presents with a sawtooth pattern on EKG at a rate of approximately 300 bpm in the atria. What is the most likely rhythm?
Answer: Atrial flutter
Atrial flutter characteristically produces a sawtooth pattern of flutter waves at an atrial rate near 300 bpm, typically with a ventricular response around 150 bpm.
Which EKG finding indicates Wolff-Parkinson-White (WPW) syndrome?
Answer: Delta waves with shortened PR interval
WPW syndrome is identified by a delta wave (slurred upstroke of the QRS), a shortened PR interval, and a widened QRS complex due to an accessory pathway.
What is the correct placement for precordial lead V4?
Answer: Fifth intercostal space, midclavicular line
Lead V4 is placed at the fifth intercostal space at the left midclavicular line.
A wide-complex tachycardia at 180 bpm with AV dissociation is most consistent with which diagnosis?
Answer: Ventricular tachycardia
AV dissociation in the setting of a wide-complex tachycardia is a strong indicator of ventricular tachycardia rather than SVT with aberrancy.
Which artifact on an EKG is most commonly caused by patient movement or shivering?
Answer: Muscle tremor artifact
Muscle tremor artifact produces a fine, irregular baseline distortion caused by skeletal muscle contractions from shivering or tension.
On a standard 12-lead EKG, what does a pathological Q wave indicate?
Answer: Prior myocardial infarction
Pathological Q waves (greater than one-third the height of the R wave or wider than 0.04 seconds) indicate prior myocardial necrosis from a previous infarction.